Transverse flux reciprocating motor and reciprocating compressor including a transverse flux reciprocating motor

ABSTRACT

A transverse flux reciprocating motor and a reciprocating compressor including a transverse flux reciprocating motor are provided. The transverse flux reciprocating motor may include a stator having an inner stator and an outer stator located outside and spaced apart from the inner stator in a radial direction, at least one magnet coil wound on the stator, at least one magnet coupled to an outer circumferential surface of the inner stator or an inner circumferential surface of the outer stator and having different magnetic poles arranged in an orthogonal direction of flux generated by the magnet coil, and a mover inserted into a cavity formed between the inner stator and the outer stator, formed of a magnetic material and reciprocating with respect to the stator. A magnetic resonant spring for causing resonant motion of the mover with respect to the stator using a force moving to low magnetic resistance between the stator and the mover is implemented, thereby reducing a size and weight of the reciprocating motor and the reciprocating compressor including the reciprocating motor and obtaining higher efficiency.

CROSS-REFERENCE TO RELATED APPLICATION(S)

The present application claims priority under 35 U.S.C. 119 and 35U.S.C. 365 to Korean Patent Application No. 10-2017-0014466, filed inKorea on Feb. 1, 2017, which is hereby incorporated by reference in itsentirety.

BACKGROUND 1. Field

A transverse flux reciprocating motor and a reciprocating compressorincluding a transverse flux reciprocating motor are disclosed herein.

2. Background

A motor is an apparatus for obtaining rotational force or reciprocatingforce by converting electric energy into mechanical energy. This motormay be categorized into an alternating current motor (AC) and a directcurrent (DC) motor according to a power applied thereto.

The motor includes a stator and a mover (or rotor). The mover providedwith a magnet rotates or reciprocates according to a direction of fluxgenerated when current flows in a coil provided in the stator.

The motor may be categorized into a rotary motor and a reciprocatingmotor according to a motion type thereof. In a case of the rotary motor,the mover rotates with respect to the stator by flux generated in thestator by power applied to a magnet coil. In contrast, in a case of thereciprocating motor, the mover linearly reciprocates with respect to thestator.

The reciprocating motor is obtained by modifying flux of a motor, whichhas a stereoscopic structure, to a flat shape, and is a type of motorhaving a flat mover, which is arranged on a flat stator to linearly moveaccording to change in a magnetic field of the stator. Recently, areciprocating motor for a compressor has been introduced, in which astator is formed in a cylindrical shape to have an inner stator and anouter stator, a magnet coil that generates an induced magnetic field atany one of the inner stator or the outer stator is wound, and a magnetprovided with magnet poles arranged in an axial direction of the statoris provided in a mover to allow the mover to reciprocate in an air gapbetween the inner stator and the outer stator.

A reciprocating motor for a compressor is disclosed in Korean RegisteredPatent No. 10-0492615 (hereinafter, referred to as “related art 1”) andKorean Registered Patent No. 10-0539813 (hereinafter, referred to as“related art 2”), which are hereby incorporated by reference. In therelated art 1 and the related art 2, an outer stator or inner stator isformed in a cylindrical shape by radially stacking a plurality of ironcores formed of thin plates through punching. Related art 1 discloses astructure in which the plurality of iron cores is radially stacked inboth the inner stator and the outer stator. Related art 2 discloses astructure in which the plurality of iron cores is radially stacked inthe inner stator and circularly stacked core blocks are radially stackedin the outer stator as an improvement of related art 1.

However, in the above-described conventional reciprocating motor, asseveral hundreds of iron cores are individually punched and thenradially stacked to form the inner stator or the outer stator asdescribed above, it is difficult to punch and radially stack severalhundreds of iron cores and to cylindrically fix the iron cores.Therefore, it is difficult to manufacture the inner stator and the outerstator.

That is, as many iron cores, that is, several hundreds of iron cores,are punched, manufacturing costs increase. In addition, as the ironcores are individually and radially stacked, an assembling process isdifficult and an assembling time is excessively increased, therebyincreasing manufacturing costs.

Further, even when a predetermined number of iron cores is individuallystacked to form several core blocks and then the core blocks areradially stacked, as several hundreds of iron cores are punched and theiron cores are individually and radially stacked in the inner stator,the disadvantage of the assembling process of assembling the stator andthe disadvantage of manufacturing costs required therefor still remain.

Furthermore, in the conventional reciprocating motor, in order to fixand maintain the inner stator and the outer stator in the cylindricalshape, a fixing ring is pressed. However, when the iron cores areindividually stacked, it is difficult to stack the iron cores whilealigning the positions of fixing grooves provided in the iron cores andto press and fix the fixing ring into the fixing grooves provided in theseveral hundreds of iron cores.

In addition, if the plurality of iron cores is combined to form the coreblocks, the shapes of the core blocks are maintained through a generalcaulking process. If the areas of the iron cores are small, the shapesof some iron cores may be twisted and modified during the caulkingprocess, and thus, the sizes of the iron cores cannot be reduced.Therefore, there is a limitation in downsizing the motor.

Also, the above-described conventional reciprocating motor has a problemin that the mover is supported by the mechanical resonance spring of acompressed coil spring but a specific period is not used as a drivefrequency even within a drive frequency of a certain period due toresonance generated by the compressed coil spring.

Further, according to the conventional reciprocating motor, as themechanical resonance spring of a compressed coil spring is installed,there is a restriction in terms of mechanical stress limit and vibrationdistance in view of properties of the compressed coil spring. For thisreason, as the resonance spring should have a certain linear diameterand length, for example, there is a limitation in reducing a horizontallength of the reciprocating motor.

Furthermore, according to the conventional reciprocating motor, as themechanical resonance spring of a compressed coil spring is installed, aspring support member for fixing both ends of the compressed coil springshould be provided in each of the mover and the stator, whereby aproblem occurs in that a mechanical structure of the motor iscomplicated. Also, as a plurality of resonance springs should bepressurized at a high pressure to be installed at both front and rearsides of the mover, a problem occurs in that an assembly process becomesdifficult.

In addition, according to the conventional reciprocating motor, as themechanical resonance spring of the compressed coil spring is installed,while the mover is eccentrically disposed by a side force generated dueto the properties of the compressed coil spring, friction loss with thestator increases.

Additionally, according to the conventional reciprocating motor, as themover including a magnet is arranged to reciprocate between the outerstator and the inner stator, an air gap is formed at each of an outsideand an inside of the mover, whereby an entire air gap is increased, andthus, a problem occurs in that motor efficiency is deteriorated. Also,according to the conventional reciprocating motor, as the thickness of amagnet frame supporting a magnet is large, and thus, the total weight ofthe mover is increased, power consumption is increased and an air gapbetween the outer stator and the inner stator is further increased,whereby a problem occurs in that motor efficiency is more deteriorated.

Finally, a reciprocating compressor, to which the above reciprocatingmotor is applied, still has the aforementioned problems of thereciprocating motor. For this reason, there is a limitation indownsizing the reciprocating compressor.

BRIEF DESCRIPTION OF THE DRAWINGS

Embodiments will be described in detail with reference to the followingdrawings in which like reference numerals refer to like elements, andwherein:

FIG. 1 is a schematic perspective view showing a transverse fluxreciprocating motor according to an embodiment;

FIG. 2 is a perspective view showing parts of the transverse fluxreciprocating motor of FIG. 1;

FIGS. 3 and 4 are cross-sectional views taken along lines III-III andIV-IV of FIG. 1;

FIG. 5 is a front view showing the transverse flux reciprocating motorof FIG. 1;

FIGS. 6 and 7 are schematic views taken along line VI-VI of FIG. 5 inorder to explain operation of the reciprocating motor according to thepresent embodiment;

FIG. 8 is a perspective view showing a reciprocating motor according toanother embodiment;

FIG. 9 is an exploded perspective view of the reciprocating motor ofFIG. 8;

FIG. 10 is a schematic view taken along line X-X of FIG. 8 in order toexplain an operation of the reciprocating motor according to anembodiment;

FIG. 11 is a perspective view showing a reciprocating motor according toanother embodiment;

FIG. 12 is a front view showing the transverse flux reciprocating motorof FIG. 11;

FIG. 13 is an exploded perspective view of the transverse fluxreciprocating motor of FIG. 11;

FIG. 14 is a schematic view taken along line XIV-XIV of FIG. 11 in orderto explain operation of the reciprocating motor according to theembodiment; and

FIG. 15 is a longitudinal cross-sectional view of a reciprocatingcompressor, to which the reciprocating motor according to an embodimentis applied.

DETAILED DESCRIPTION

FIG. 1 is a schematic perspective view showing a transverse fluxreciprocating motor according to an embodiment. FIG. 2 is a perspectiveview showing a part of the transverse flux reciprocating motor of FIG.1.

As shown in FIGS. 1 and 2, the transverse flux reciprocating motor(hereinafter, referred to as a “reciprocating motor”) according to anembodiment may include a stator 100, magnet coils 210, a magnet 300, anda mover 400. The stator 100 may include at least one of an inner stator110 or an outer stator 120 located outside the inner stator 110 in aradial direction and spaced apart from the inner stator 110. That is,the stator 100 may include only the inner stator 110 or the outer stator120 or include the inner stator 110 and the outer stator 120.

Hereinafter, although the stator 100 includes the inner stator 110 andthe outer stator 120, embodiments are not limited thereto and the stator100 may include only the inner stator 110 or the outer stator 120.However, if the stator 100 includes only the inner stator 110, the mover400 may be located outside and spaced apart from the stator 100, and themagnet 300 may be attached to an inner circumferential surface of thestator 100. In addition, if the stator 100 includes only the outerstator 120, the mover 400 may be located inside and space apart from thestator 100 and the magnet 300 may be attached to the innercircumferential surface of the stator 100.

If the stator 100 includes the inner stator 110 and the outer stator120, an outer diameter of the inner stator 110 may be less than an innerdiameter of the outer stator 120 and an air gap 130 is formed betweenthe inner stator 110 and the outer stator 120. In addition, the innerstator 110 and the outer stator 120 configuring the stator 100 may bemade of a magnetic material or a conductive material.

The inner stator 100 forms a cavity 111 and the cavity 111 is used as aspace where a piston, for example, will be provided. The inner stator110 and the outer stator 120 may be integrally formed and, in somecases, may be configured by stacking a plurality of blocks.

FIGS. 3 to 4 are cross-sectional views taken along lines III-III andIV-IV of FIG. 1. Referring to FIGS. 3 and 4, the inner stator 110 andthe outer stator 120 may be configured by stacking inner core blocks 110a and outer core blocks 120 a in an axial direction (a reciprocatingdirection of the mover).

As the inner stator 110 and the outer stator 120 are configured bystacking the inner core blocks 110 a and the outer core blocks 120 a inthe axial direction, the blocks may be easily stacked as compared to theconventional method of radially stacking the blocks. In addition, thestacked state is advantageously maintained as compared to radialstacking.

The magnet coil 210 may be wound on the outer stator 120. For example,the magnet coil 210 may be directly wound on the outer stator 120.

As another example, the magnet coil 210 may be first wound and thencoupled to the outer stator 120 in a state of being wound. Morespecifically, the magnet coil 210 may be wound on a bobbin through aseparate winding device and then the magnet coil 210 may be coupled tothe outer stator 120 by inserting the outer stator 120 into a cavity ofthe bobbin.

The magnet 300 may be coupled to the outer circumferential surface ofthe inner stator 110 or the inner circumferential surface of the outerstator 120. The magnet may be arranged to have different magnet poles inan orthogonal direction of flux generated by the magnet coil 210 of themagnet 300. More specifically, the magnet 300 may be arranged to havedifferent magnet poles in the axial direction (the reciprocatingdirection of the mover).

In addition, the magnet 300 may be provided such that the cross sectionthereof has a circular or arc shape, thereby surface-contacting theouter circumferential surface of the inner stator 110 or the innercircumferential surface of the outer stator 120, which is a curvedsurface. More specifically, the magnet 300 may have a cylindrical shapeor an arc-shaped cross section when viewed in the axial direction or aplurality of magnets may be spaced apart from each other on the outercircumferential surface of the inner stator 110 or the innercircumferential surface of the outer stator 120 in a circumferentialdirection. In addition, the magnet 300 may be a 2-pole magnet having anN pole and an S pole having a same length.

The magnet 300 is exposed to the air gap 130. In this embodiment, themagnet 300 may be fixed to the outer stator 120. As another example, themagnet 300 may be fixed to the inner stator 110. As another example, themagnet 300 may be fixed to the inner stator 110 and the outer stator120.

In addition, the plurality of magnets 300 may be formed on the outercircumferential surface of the inner stator 110 or the innercircumferential surface of the outer stator 120 in the circumferentialdirection. An air gap may be formed between the magnets 300.

The magnet 300 may be arranged to have a magnet pole different from thatof a neighboring magnet 300. For example, as shown in FIG. 1, if fourmagnets 300 are provided, a first magnet 310 located at an upper side ofthe figure may have a magnet pole different from those of a third magnet330 located at a left side of the figure and a fourth magnet 340 locatedat a right side of the figure but may have the same magnet pole as asecond magnet 320 located at a lower side of FIG. 1. Although not shown,if two magnets 300 are provided, an upper magnet and a lower magnet mayhave different magnet poles.

The mover 400 may be inserted into the air gap 130 formed between theinner stator 110 and the outer stator 120, may be made of a magneticmaterial, and may reciprocate with respect to the stator 100. In thisembodiment, at least a part of an axial cross section of the mover 400may have an arc shape. More specifically, the mover 400 may be formed asa single body and may have a cylindrical shape such that the mover 400may be inserted into the cylindrical gap 130 formed between the innerstator 110 and the outer stator 120.

A plurality of movers 400 may be formed to have an arc-shaped crosssection when viewed in the axial direction and may be spaced apart fromeach other in a circumferential direction. In this case, a gap may beformed between the movers 400 and joints made of a non-magnetic materialmay be formed in the gap. By the joints, the plurality of movers 400 maybe coupled as a single body.

The mover 400 may be connected to a piston through a connector 70. Forexample, the connector 70 may have a cylindrical shape to be connectedto the inner circumferential surface or outer circumferential surface ofthe mover 400 having the cylindrical shape. As another example, theplurality of movers 400 each having an arc-shaped cross section may bespaced apart from each other along the circumference of the connector70.

In addition, as the mover 400 is inserted at a gap from the magnet 300and the outer surface of the inner stator 110 or the outer stator 120exposed to the air gap 130, a size of the mover 400 is less than a sizeof the air gap 130. That is, a diameter of the inner circumferentialsurface of the mover 400 may be greater than a diameter of the outercircumferential surface of the inner stator 110 and a diameter of theouter circumferential surface of the mover 400 may be less than adiameter of the inner circumferential surface of the outer stator 120.

In addition, the mover 400 may be configured as a single body and, insome cases, may be configured by stacking a plurality of blocks. In thelatter case, the plurality of mover core blocks (not shown) may bestacked in the reciprocating direction of the mover 400.

Referring to FIGS. 1 and 2 again, the outer stator 120 may include ayoke part or yoke 121 forming a magnetic path and a teeth parts or teeth122 extending from the yoke part 121 in a radial direction to surroundthe mover 400. The magnet coil 210 may be wound on and coupled to theteeth part 122.

For example, the yoke part 121 may be formed in an annular shape and theteeth parts 122, on which the magnet coils may be wound, may extend froman inner circumferential surface of the yoke part 121 in the radialdirection. A space 124 may be formed between the teeth parts 122 and themagnet coil 210 may be wound therein. Accordingly, the teeth parts 122and the space 124 may be alternately formed in the circumferentialdirection.

An even number of teeth parts 122 may be formed at a predetermined gapin the circumferential direction of the stator 100, and the magnet coil210 coupled to each teeth part 122 may form flux in an oppositedirection of flux generated by a neighboring magnet coil 210. Morespecifically, the magnet coils 210 may be alternately wound in oppositedirections along the circumferential direction. The flux direction ofthe teeth part 122 may be opposite to that of a neighboring teeth partin the circumferential direction.

For example, as shown in FIG. 1, if four magnet coils 210 are provided,a first magnet coil 211 located at an upper side of the figure may bewound in a direction opposite to a winding direction of a third magnetcoil 213 located at a left side of the figure and a fourth magnet coil214 located at a right side of the figure may be wound in a samedirection as a second magnet coils 212 located at a lower side of thefigure. In this case, the number of magnets 300 may be equal to thenumber of magnet coils 210 and the magnets 300 may be arranged to have amagnetic pole opposite to that of a neighboring magnet 300.

FIG. 5 is a front view showing the transverse flux reciprocating motorof FIG. 1. Referring to FIG. 5, the teeth parts 122 may include a firstteeth part or teeth 122 a that extends from an internal upper end of theyoke part 121 downward, a second teeth part or teeth 122 b that extendsfrom an internal lower end of the yoke part 121 upward, a third teethpart 122 c that extends from a left to a right of the yoke part 121 anda fourth teeth part 122 d that extends from the right to the left of theyoke part 121. In addition, a stator pole part 125 having the magnet 300fixed on an inner circumferential surface thereof may extend from aninner end of each teeth part 122 in the circumferential direction.

If a circumferential length of the stator pole 125 is greater than thatof the magnet 300, another magnet may be influenced, and thus, thecircumferential length of the stator pole may not be greater than thatof the magnet. For example, the circumferential length of the statorpile 125 may be equal to that of the magnet 300.

The stator pole 125 may include a first stator pole 125 a formed on aninner end of the first teeth part 122 a, a second stator pole 125 bformed on an inner end of the second teeth part 122 b, a third statorpole 125 c formed on an inner end of the third teeth part 122 c and afourth stator pole 125 d formed on an inner end of the fourth teeth part122 d. The magnets 310, 320, 330 and 340 may be fixed to the statorpoles 125 a, 125 b, 125 c and 125 d, respectively.

An even number of teeth parts, that is, at least two teeth parts may beformed and an even number of magnet coils 210 wound on the teeth parts122 may be provided.

If the outer stator 120 is formed by stacking a plurality of outer coreblocks 120 a, a fastening hole 123 may be formed in each outer coreblock 120 a and the plurality of outer core blocks 120 a may beintegrally coupled by a fastening member (not shown) that penetratesthrough the fastening hole 123. The fastening hole 123 may be formed inat least one of the yoke part 121 or the teeth parts 122.

If the inner stator 110 is formed by stacking a plurality of inner coreblocks 110 a, a fastening hole 113 may be formed in each inner coreblock 110 a and the plurality of inner core blocks 110 a may beintegrally coupled. In addition, if the mover 400 is formed by aplurality of mover core blocks (not shown) in an axial direction, afastening hole (not shown) may be formed in each mover core block (notshown) and the plurality of mover core blocks (not shown) may beintegrally coupled by the fastening member (not shown) that penetratesthrough the fastening hole (not shown).

The yoke part 121 and the teeth parts 122 may be separated and a cavity201 may be formed by the magnet coil 210, such that the yoke part 121 isinserted into the cavity 201 of the magnet coil 210 and then connectedto the teeth parts 122 or the teeth parts 122 are inserted into thecavity 201 of the magnet coil 210 and then connected to the yoke part121. For example, the yoke part 121 and the teeth parts 122 may beseparated and then integrally connected.

As another example, the yoke part 121 may be separated into a pluralityof yoke parts and then integrally connected. As another example, theteeth part 122 may be separated into a plurality of teeth parts and thenintegrally connected.

The plurality of yoke parts 121 and/or teeth parts 122 separated invarious forms may be inserted into the cavity 201 of the magnet coil 210and then connected to each other. The separated yoke parts 121 or theteeth parts 122 may be bonded into one body through welding, forexample.

When the yoke part 121 or the teeth part 122 is separated into aplurality of yoke parts or teeth parts, the magnet coil 210 is not woundon the yoke parts 121 or the teeth parts 122 using a winding device (notshown) and a plurality of magnet coils 210 may be manufactured in anannular shape, the yoke parts 121 or the teeth parts 122 may be insertedinto the cavities 201 of the magnet coils 210, and the magnet coils 210may be coupled to the outer stator 120.

Referring to FIG. 5 again, a width t2 of the teeth part 122 may begreater than a width t1 of the yoke part 121. An area of a magnetic pathof the teeth part 122 may be ensured to improve performance of themotor. Upon bolt fastening into the fastening hole 123, the yoke part121 or the teeth part 122 may be suppressed from being distorted bytorsional moment.

The reciprocating motor according to the embodiment including theabove-described configuration may reciprocate by a reciprocatingcentering force generated among the stator 100 including the magnet coil210, the magnet 300, and the mover 400. The reciprocating centeringforce may refer to a force moving to low magnetic energy (low magneticposition energy, low magnetic resistance) when the mover 400 moveswithin a magnetic field. This force forms a magnetic spring.

That is, in this embodiment, when the mover 400 reciprocates by themagnetic force generated by the magnet coil 210 and the magnet 300, themover 400 accumulates force to be restored in a center direction by themagnetic spring and the mover 400 continuously reciprocates whileresonating due to force accumulated in the magnetic spring.

Hereinafter, operation of the transverse flux reciprocating motoraccording to an embodiment will be described.

FIGS. 6 and 7 are schematic views taken along line VI-VI of FIG. 5 inorder to explain an operation of the reciprocating motor according to anembodiment. First, when alternating current is applied to the magnetcoils 211 and 213 of the reciprocating motor, alternating flux is formedin the stator 100. In this case, the mover 400 continuously reciprocateswhile bidirectionally moving in a flux direction.

In the reciprocating motor, a magnetic resonance spring is formed amongthe mover 400, the stator 100, and the magnet 300, thereby causing aresonant motion of the mover 400. For example, as shown in FIG. 6, whencurrent is applied to the first magnet coil 211 and the third magnetcoil 213 in an opposite direction in a state in which the magnets 310and 330 are fixed to the outer stator 120, both fluxes are combined inthe teeth parts 122 a and 122 c to flow in a same direction, such thatthe teeth parts 122 a and 122 c have different magnet poles. At thistime, the mover 400, which is a magnetic material, moves in a leftwarddirection (see arrow M1) of the figure in which fluxes generated by themagnet coils 211 and 213 and fluxes generated by the magnets 310 and 330increase.

The reciprocating centering force to be restored in a rightwarddirection of the figure having low magnetic energy (that is, lowmagnetic position energy or low magnetic resistance) is accumulatedamong the mover 400, the stator 100, and the magnets 310 and 330. Inthis state, as shown in FIG. 7, when the directions of currents appliedto the first magnet coil 211 and the third magnet coil 213 are changed,the teeth parts 122 a and 122 c have magnet poles opposite to theprevious magnet poles and the fluxes generated by the first magnet coil211 and the third magnet coil 213 and the fluxes generated by themagnets 310 and 330 increase in a direction opposite to the previousdirection, that is, in the rightward direction of the figure.

By the accumulated reciprocating centering force F1 and magnetic forcegenerated by the fluxes of the magnet coils 211 and 213 and the magnets310 and 330, the mover 400 moves in the rightward direction of thefigure (see arrow M2). In this process, the mover 400 passes a center ofthe magnets 310 and 330 to further move in the rightward direction ofthe figure, by inertial force and magnetic force. Even at this time,similarly, reciprocating centering force F2 to be restored in the centerdirection of the magnets 310 and 330 having low magnetic energy, thatis, the leftward direction of the figure, is accumulated among the mover400, the stator 100 and the magnets 310 and 330.

As shown in FIG. 6, when directions of the currents applied to the firstmagnet coil 211 and the third magnet coil 213 are changed, the teethparts 122 a and 122 c have magnet poles opposite to previous magnetpoles, and the mover 400 moves in the center direction of the magnets310 and 330 by the accumulated reciprocating centering force F2 andmagnetic force generated by fluxes of the first magnet coil 211, thethird magnet coil 213 and the magnets 310 and 330. Even at this time,the mover 400 passes the center of the magnets 310 and 330 to furthermove in the leftward direction of the figure, by inertial force andmagnetic force, and reciprocating centering force F1 to be restored inthe center direction of the magnet 300 having low magnetic energy, thatis, the rightward direction of the figure, is accumulated among themover 400, the stator 100, and the magnets 310 and 330. In this manner,the mover 400 continuously and repeatedly reciprocates in the rightwardand leftward directions of the figure, as if a mechanical resonantspring is provided.

FIG. 8 is a perspective view showing a reciprocating motor according toanother embodiment. Referring to FIG. 8, outer stator 120 may have yokepart 121 formed such that magnet coils 210 may be disposed on both sidesof the teeth parts 122.

For example, the outer stator 120 may have the yoke part 121 formed in arectangular ring shape, and the teeth parts 122 formed at both oppositeinner side surfaces of the yoke part 121 to protrude toward a centerthereof. An air gap may be formed between the opposite teeth part 122.

The yoke part 121 may include transverse yoke parts or yokes 121 a thatextend from both side surfaces of the teeth parts 122 and longitudinalyoke parts or yokes 121 b that extend from ends of the transverse yokeparts 121 a inward in an orthogonal direction. The teeth parts 122 maybe spaced apart from each other to form slots 121 c with thelongitudinal yoke parts 121 b and magnet attachment surfaces, to whichthe magnet 300 may be attached, may be provided in the teeth parts 122in an arch shape. The longitudinal yoke parts 121 b may be formed as asingle body. In this case, the magnet coils 210 may be wound on thelongitudinal yoke parts 121 b.

FIG. 9 is an exploded perspective view of the reciprocating motor ofFIG. 8. Referring to FIG. 9, air gaps may be formed in centers of thelongitudinal yoke parts 121 b such that sides of the longitudinal yokeparts 121 b are separated. That is, the air gaps may be formed betweenthe yoke parts 121 as if the air gaps are formed between the oppositeteeth parts 122.

In this case, the outer stator 120 may be divided into two outerstators. If the outer stator 120 is divided into two outer stators, endsof the longitudinal yoke parts 121 b facing each other may be insertedinto cavities 201 of magnet coils 210. Accordingly, flux may form aclosed loop.

As the outer stator 120 is divided as described above, as the ends ofthe longitudinal yoke parts 121 b are only inserted into the cavities201 after winding the magnet coils 210 on a bobbin 220 having a cavity,the magnet coils 210 do not need to be wound on the longitudinal yokeparts 121 b, thereby improving workability.

FIG. 10 is a schematic view taken along line X-X of FIG. 8 in order toexplain an operation of the reciprocating motor according to anembodiment. Referring to FIG. 10, magnet coils 215 and 216 coupled toboth yoke parts 121 may be wound in opposite directions. In addition,magnets 350 and 360 may be respectively attached to teeth parts 122facing each other, the magnets 350 and 360 may form magnetic polesopposite to each other, and a gap may be formed between the magnets 350and 360.

When current is applied to the magnet coils 215 and 216, fluxes flow inthe yoke part 121 in opposite directions, but both fluxes are combinedin the teeth parts 122 to flow in the same direction, such that bothteeth parts 122 have different magnetic poles. The mover 400, which isthe magnetic material, moves in a leftward direction (see arrow M1) ofthe figure in which the fluxes of the magnet coils 215 and 216 and thefluxes of the magnets 310 and 330 increase.

A reciprocating centering force (see arrow F1) to be restored in arightward direction of the figure having low magnetic energy (that is,low magnetic position energy or low magnetic resistance) is accumulatedamong the mover 400, the stator 100, and the magnets 350 and 360. Inthis state, when the directions of currents applied to the magnet coils215 and 216 are changed, fluxes of the magnet coils 215 and 216 andfluxes of the magnets 350 and 360 increase in a direction opposite to aprevious direction, that is, in the rightward direction of the figure.

By the accumulated reciprocating centering force F1 and magnetic forcegenerated by the fluxes of the magnet coils (magnet coils 215 and 216)and the magnets 350 and 360, the mover 400 moves in the rightwarddirection of the figure. In this process, the mover 400 passes a centerof the magnets 350 and 360 to further move in the rightward direction ofthe figure, by inertial force and magnetic force.

Even at this time, similarly, the reciprocating centering force to berestored in a center direction of the magnets 350 and 360 having lowmagnetic energy, that is, the leftward direction of the figure, isaccumulated among the mover 400, the stator 100, and the magnets 350 and360. In this manner, the mover 400 continuously and repeatedlyreciprocates in the rightward and leftward directions of the figure, asif a mechanical resonant spring is provided.

FIG. 11 is a perspective view showing a reciprocating motor according toanother embodiment. FIG. 12 is a front view showing the transverse fluxreciprocating motor of FIG. 11.

Referring to FIGS. 11 to 12, the outer stator 120 may include yoke partor yoke 121 formed such that magnet coil 210 may be disposed at one sideof teeth part or teeth 122. For example, the yoke part 121 may include atransverse yoke part or yoke 121 a that extends from one side of theteeth part 122 and longitudinal yoke parts or yokes 121 b that extendfrom an end of the transverse yoke part 121 a in an orthogonaldirection.

In addition, the teeth parts 122 may be spaced apart from thelongitudinal yoke parts 121 b to form a slot 121 c therewith, and amagnet attachment surface, to which the magnet 300 may be attached, maybe provided in the teeth part 122 in an arch shape. An air gap is formedbetween the teeth parts 122 facing each other.

The longitudinal yoke parts 121 b may be formed as a single body. Inthis case, the magnet coil 210 may be wound on the longitudinal yokeparts 121 b.

FIG. 13 is an exploded perspective view of the transverse fluxreciprocating motor of FIG. 11. Referring to FIG. 13, air gaps may beformed in centers of the longitudinal yoke parts 121 b such that bothsides of the longitudinal yoke parts 121 b are separated. That is, airgaps may be formed between the yoke parts 121, as if the air gaps areformed between the teeth parts 122 facing each other.

In this case, the outer stator 120 may be divided into two outerstators. If the outer stator 120 is divided into two outer stators, theends of the longitudinal yoke parts 121 b facing each other may beinserted into cavity 201 of the magnet coil 210. Accordingly, flux mayform a closed loop.

As the outer stator 120 is divided as described above, as the ends ofthe longitudinal yoke parts 121 b are only inserted into the cavity 201after winding the magnet coil 210 on a bobbin 220 having the cavity 201,the magnet coil 210 does not need to be wound on the longitudinal yokeparts 121 b, thereby improving workability.

FIG. 14 is a schematic view taken along line XIV-XIV of FIG. 11 in orderto explain operation of the reciprocating motor according to anembodiment. Referring to FIG. 14, magnets 370 and 380 are respectivelyattached to the teeth parts 122 facing each other and form magneticpoles opposite to each other.

In this state, when current is applied to the magnet coil 217 coupled tothe yoke part 121, both teeth parts 122 form different magnetic poles.The mover 400, which is the magnetic material, moves in a leftwarddirection (see arrow M1) of the figure in which the flux of the magnetcoil 217 and the fluxes of the magnets 370 and 380 increase.

In addition, a reciprocating centering force (see arrow F1) to berestored in a rightward direction of the figure having low magneticenergy (that is, low magnetic position energy or low magneticresistance) is accumulated among the mover 400, the stator 100, and themagnets 370 and 380. In this state, when the direction of currentapplied to the magnet coil 217 is changed, flux of the magnet coil 217and fluxes of the magnets 370 and 380 increase in a direction oppositeto a previous direction, that is, in the rightward direction of thefigure.

By the accumulated reciprocating centering force F1 and magnetic forcegenerated by the fluxes of the magnet coil (magnet coil 217) and themagnets 370 and 380, the mover 400 moves in the rightward direction ofthe figure. In this process, the mover 400 passes a center of themagnets 370 and 280 to further move in the rightward direction of thefigure, by inertial force and magnetic force.

Even at this time, similarly, the reciprocating centering force to berestored in the center direction of the magnets 370 and 380 having lowmagnetic energy, that is, the leftward direction of the figure, isaccumulated among the mover 400, the stator 100, and the magnets 370 and380. In this manner, the mover 400 continuously and repeatedlyreciprocates in the right and left directions of the figure, as if amechanical resonant spring is provided.

FIG. 15 is a longitudinal cross-sectional view of a reciprocatingcompressor, to which the reciprocating motor according to an embodiment.Referring to FIG. 15, the reciprocating compressor 1 according to thisembodiment may include a case 10 having an internal space, areciprocating motor 20 provided in the internal space of the case 10 andhaving a reciprocating mover 400, a piston 30 coupled to the mover 400of the reciprocating motor 20 to reciprocate with the mover, a cylinder40 having the piston 30 inserted thereto and forming a compression space42, a suction valve 31 that opens and closes a suction side of thecompression space 42 and a discharge valve 41 that opens and closes adischarge side of the compression space 42.

That is, a suction pipe 11 may be connected to the internal space of thesealed case 10 and a discharge pipe 12 that guides refrigerantcompressed in the compression space 42 of the cylinder 40, which will bedescribed hereinafter, to a freezing cycle may be connected to one sideof the suction pipe 11. Therefore, the internal space of the case 10 maybe filled with the suctioned refrigerant to form a suction pressure, andrefrigerant discharged from the compression space 42 may be dischargedto the outside of the case 10 toward a condenser through the dischargepipe 12.

A frame 50 may be formed in the internal space of the case 10. Thereciprocating motor 20 that generates a reciprocating force and causes aresonant motion of the piston 30, which will be described hereinafter,may be fixed to one side of the frame 50.

The compression space 42 may be provided in the reciprocating motor 20such that the cylinder 40 inserted into the frame 50 is coupled, and thepiston 30, which is reciprocatingly inserted into the cylinder 40 tochange a volume of the compression space 42 to compress refrigerant, maybe coupled to the cylinder 40.

The suction valve 31 that opens and closes a suction flow channel of thepiston 30 may be coupled to a front end of the piston 30, and thedischarge valve 41 that opens and closes the compression space 42 of thecylinder 40 may be received in a discharge cover 60 and may bedetachably coupled to a front end of the cylinder 40. The dischargecover 60 may be provided in a discharge space 61 to be fixed and coupledto the cylinder 40. The discharge valve 41 and a valve spring 43 thatsupports the discharge valve 41 may be received and an inlet of a gasbearing that lubricates a space between the cylinder 40 and the piston30 may be received, in the discharge space 61 of the discharge cover 60.

The gas bearing (not shown) may include a gas passage formed between aninner circumferential surface of the frame 50 and an outercircumferential surface of the cylinder 40 and a plurality of fine gasthrough-holes that passes through an inner circumferential surface ofthe cylinder 40 from a middle of the gas passage.

The reciprocating motor 20 may have the configuration shown in FIGS. 1to 14. Therefore, for the configuration of the reciprocating motor,refer to the above-described reciprocating motor.

However, in this embodiment, inner stator 110 and outer stator 120 maybe fixed to the frame 50 and the mover 400 may be connected to thepiston 30. Accordingly, when the mover 400 reciprocates with respect tothe stator 100 and the magnet 300, the piston 30 inserted into thecylinder 40 may bidirectionally reciprocate along with the mover 400.

In the reciprocating compressor 1 according to an embodiment, whenalternating current is applied to the magnet coil 210 of thereciprocating motor 20, alternating flux may be formed among the stator100, the magnet 300, and the mover 400, and the mover 400 and the piston30 connected thereto continuously reciprocate while moving in adirection in which flux of the magnet coil 310 and flux of the magnet300 increase.

A reciprocating centering force to be restored to low magnetic energymay be accumulated between the mover 400 and stator 100 of thereciprocating motor 20 and the magnet 300. In this state, when adirection of current applied to the magnet coil 210 is changed, by theaccumulated reciprocating centering force and magnetic force generatedby fluxes of the magnet coil 210 and the magnet 300, the mover 400, andthe piston 30 connected thereto move in a direction opposite to aprevious direction. Even at this time, the reciprocating centering forceto be restored to low magnetic energy is accumulated between the mover400 and stator 100 of the reciprocating motor and the magnet 300.

In this manner, the mover 400 and the piston 30 continuously andrepeatedly reciprocate in the rightward and leftward directions of thefigure, as if a mechanical resonant spring is provided. The magneticresonance spring may be formed among the mover 400, the stator 100, andthe magnet 300 while the mover 400 reciprocates in the reciprocatingmotor, thereby causing resonant motion of the mover 400 and the piston30. As a result, the piston 30 may compress refrigerant while overcominga gas force generated in the compression space 42.

The reciprocating compressor according to embodiments may have theabove-described operation effects according to the reciprocating motorsof FIGS. 1 to 14. Therefore, for the operation effects of thereciprocating compressor, refer to the above-described reciprocatingmotor.

A reciprocating compressor according to embodiments may include asmall-sized lightweight reciprocating motor, and thus, be a small sizeand lightweight. Accordingly, it is possible to easily mount, maintain,and repair the compressor.

Further, as a reciprocating motor having ease of manufacture andenhanced structural rigidity is included, it is possible to easilymanufacture a compressor and to enhance structural rigidity of thecompressor. Furthermore, by reducing the weight of the mover andminimizing a magnetic air gap of the mover, the stator, and the magnet,it is possible to drive the motor at a high speed and to improve motorefficiency. Therefore, it is possible to increase efficiency of thecompressor.

Embodiments disclosed herein provide a reciprocating motor capable ofusing all resonant frequencies within a drive frequency. Embodimentsdisclosed herein further provide a reciprocating motor capable ofdownsizing a motor in an axial direction. Embodiments disclosed hereinalso provide a reciprocating motor capable of increasing motorefficiency by reducing a weight of a mover to decrease powerconsumption. Embodiments disclosed herein additionally provide areciprocating motor capable of increasing motor output by increasingonly a size of a magnet while maintaining a size of a mover.

Embodiments disclosed herein provide a reciprocating motor capable ofminimally maintaining a magnetic air gap by tolerance by reducing alength of a mover. Embodiments disclosed herein provide a reciprocatingmotor capable of maximizing rigidity of a motor spring by a magnetic airgap. Furthermore, embodiments disclosed herein provide a reciprocatingmotor capable of reducing manufacturing costs by easily manufacturing astator and a mover.

Embodiments disclosed herein provide a reciprocating motor capable ofeasily stacking blocks as compared to radial stacking and advantageouslymaintaining a stacked state by stacking the blocks configuring a statoror a mover in an axial direction in a surface contact state. Embodimentsdisclosed herein provide a reciprocating motor capable of improvingworkability by winding a magnet coil on a bobbin and then inserting anouter stator into a cavity of the bobbin. Also, embodiments disclosedherein provide a small-sized lightweight reciprocating compressor bydownsizing the reciprocating motor.

A transverse flux reciprocating motor according to embodiments mayinclude a stator having an inner stator and an outer stator locatedoutside and spaced apart from the inner stator in a radial direction, atleast one magnet coil wound on the stator, at least one magnet coupledto an outer circumferential surface of the inner stator or an innercircumferential surface of the outer stator and having differentmagnetic poles arranged in an orthogonal direction of flux generated bythe magnet coil, and a mover inserted into a cavity formed between theinner stator and the outer stator, formed of a magnetic material andreciprocating with respect to the stator. Therefore, it is possible toreduce power consumption to increase motor efficiency, by reducing aweight of the mover. In addition, a movable core may be exposed to anair gap, and thus, a magnetic air gap among the movable core, themagnet, and the stator may be minimally maintained.

Further, the stator and/or the mover may be formed by stacking aplurality of core blocks in a reciprocating direction of the mover.Therefore, as the blocks configuring the stator or the mover are stackedin the axial direction while surface-contacting each other, stacking iseasy as compared to radial stacking and a stacked state isadvantageously maintained.

Furthermore, the outer stator may include a yoke part or yoke forming amagnetic path and teeth parts or teeth that extending from the yoke partin a radial direction to surround the mover, the magnet coil may bewound on and coupled to the teeth parts. An even number of teeth partsmay be formed at a predetermined interval in a circumferential directionof the stator, and the magnet coil coupled to each of the teeth partsmay generate flux in a direction opposite to a direction of fluxgenerated by a neighboring magnet coil. The number of magnets may beequal to that of the magnet coils and the magnets may be arranged tohave magnetic poles opposite to those of neighboring magnets.

The outer stator may include a yoke part or yoke forming a magnetic pathand teeth parts or teeth that extend from the yoke part to surround themover, and the magnet coil may be wound on the yoke part. The yoke partand the teeth parts may be separated, the magnet coil may form a cavity,and the yoke part may be inserted into the cavity of the magnet coil andthen connected to the teeth parts or the teeth parts may be insertedinto the cavity of the magnet coil and then connected to the yoke part.Therefore, after the magnet coil is wound on the bobbin, the outerstator may be inserted into the cavity of the bobbin, thereby improvingworkability.

The outer stator may be formed by stacking a plurality of stator coreblocks having the yoke part and the teeth parts, and a fastening holemay be formed in the yoke part or the teeth parts and the plurality ofstator core blocks may be fastened by a fastening member penetratingthrough the fastening hole. The stator may include the yoke part formedsuch that the magnet coils are provided at both sides of the teethparts. The stator may include the yoke part formed such that the magnetcoil is provided at one side of the teeth parts.

The yoke part coupled with the magnet coil may be divided into aplurality of yoke parts and the magnet coil forms a cavity, and at leastone of the plurality of yoke parts may be inserted into the cavity ofthe magnet coil. Therefore, after the magnet coil is wound on thebobbin, the outer stator may be inserted into the cavity of the bobbin,thereby improving workability.

A plurality of magnets may be coupled in a circumferential direction ofan outer circumferential surface of the inner stator or an outercircumferential surface of the outer stator and may be arranged to havemagnetic poles different from those of neighboring magnets. The magnetcoil may be wound on a bobbin having a cavity. The plurality of dividedyoke parts may be inserted into the cavity of the magnet coil and thenconnected to each other.

A reciprocating compressor according to embodiments may include a casehaving an internal space, a reciprocating motor provided in the internalspace of the case and having a reciprocating mover, a piston coupled tothe mover of the reciprocating motor and reciprocating along with themover, a cylinder having the piston inserted into and forming acompression space, a suction valve that opens and closes a suction sideof the compression space, and a discharge valve that opens and closes adischarge side of the compression space. The reciprocating motor mayinclude the above-described transverse flux reciprocating motor.Therefore, as a small-sized lightweight reciprocating motor is provided,a size and weight of the reciprocating compressor may be reduced.

It will be understood that when an element or layer is referred to asbeing “on” another element or layer, the element or layer can bedirectly on another element or layer or intervening elements or layers.In contrast, when an element is referred to as being “directly on”another element or layer, there are no intervening elements or layerspresent. As used herein, the term “and/or” includes any and allcombinations of one or more of the associated listed items.

It will be understood that, although the terms first, second, third,etc., may be used herein to describe various elements, components,regions, layers and/or sections, these elements, components, regions,layers and/or sections should not be limited by these terms. These termsare only used to distinguish one element, component, region, layer orsection from another region, layer or section. Thus, a first element,component, region, layer or section could be termed a second element,component, region, layer or section without departing from the teachingsof the present invention.

Spatially relative terms, such as “lower”, “upper” and the like, may beused herein for ease of description to describe the relationship of oneelement or feature to another element(s) or feature(s) as illustrated inthe figures. It will be understood that the spatially relative terms areintended to encompass different orientations of the device in use oroperation, in addition to the orientation depicted in the figures. Forexample, if the device in the figures is turned over, elements describedas “lower” relative to other elements or features would then be oriented“upper” relative the other elements or features. Thus, the exemplaryterm “lower” can encompass both an orientation of above and below. Thedevice may be otherwise oriented (rotated 90 degrees or at otherorientations) and the spatially relative descriptors used hereininterpreted accordingly.

The terminology used herein is for the purpose of describing particularembodiments only and is not intended to be limiting of the invention. Asused herein, the singular forms “a”, “an” and “the” are intended toinclude the plural forms as well, unless the context clearly indicatesotherwise. It will be further understood that the terms “comprises”and/or “comprising,” when used in this specification, specify thepresence of stated features, integers, steps, operations, elements,and/or components, but do not preclude the presence or addition of oneor more other features, integers, steps, operations, elements,components, and/or groups thereof.

Embodiments of the disclosure are described herein with reference tocross-section illustrations that are schematic illustrations ofidealized embodiments (and intermediate structures) of the disclosure.As such, variations from the shapes of the illustrations as a result,for example, of manufacturing techniques and/or tolerances, are to beexpected. Thus, embodiments of the disclosure should not be construed aslimited to the particular shapes of regions illustrated herein but areto include deviations in shapes that result, for example, frommanufacturing.

Unless otherwise defined, all terms (including technical and scientificterms) used herein have the same meaning as commonly understood by oneof ordinary skill in the art to which this invention belongs. It will befurther understood that terms, such as those defined in commonly useddictionaries, should be interpreted as having a meaning that isconsistent with their meaning in the context of the relevant art andwill not be interpreted in an idealized or overly formal sense unlessexpressly so defined herein.

Any reference in this specification to “one embodiment,” “anembodiment,” “example embodiment,” etc., means that a particularfeature, structure, or characteristic described in connection with theembodiment is included in at least one embodiment. The appearances ofsuch phrases in various places in the specification are not necessarilyall referring to the same embodiment. Further, when a particularfeature, structure, or characteristic is described in connection withany embodiment, it is submitted that it is within the purview of oneskilled in the art to effect such feature, structure, or characteristicin connection with other ones of the embodiments.

Although embodiments have been described with reference to a number ofillustrative embodiments thereof, it should be understood that numerousother modifications and embodiments can be devised by those skilled inthe art that will fall within the spirit and scope of the principles ofthis disclosure. More particularly, various variations and modificationsare possible in the component parts and/or arrangements of the subjectcombination arrangement within the scope of the disclosure, the drawingsand the appended claims. In addition to variations and modifications inthe component parts and/or arrangements, alternative uses will also beapparent to those skilled in the art.

What is claimed is:
 1. A transverse flux reciprocating motor,comprising: a stator having at least one magnet coil wound thereon; atleast one magnet coupled to an outer circumferential surface or an innercircumferential surface of the stator and having different magneticpoles arranged in an orthogonal direction of flux generated by themagnet coil; and a mover formed of a magnetic material and reciprocatingwith respect to the stator while moving in a direction in which the fluxgenerated by the magnet coil and flux generated by the magnet increase.2. The transverse flux reciprocating motor according to claim 1, whereinat least one of the stator or the mover is formed by stacking aplurality of core blocks in a reciprocating direction of the mover. 3.The transverse flux reciprocating motor according to claim 1, whereinthe stator includes an inner stator, and an outer stator spaced apartfrom the inner stator to form an air gap outside the inner stator in aradial direction.
 4. The transverse flux reciprocating motor accordingto claim 1, wherein the stator includes a yoke forming a magnetic pathand teeth that extend from the yoke in a radial direction to surroundthe mover, and wherein the at least one magnet coil is wound on andcoupled to the teeth.
 5. The transverse flux reciprocating motoraccording to claim 4, wherein the yoke and the teeth are separated, theat least one magnet coil forms a cavity, and the yoke is inserted intothe cavity of the at least one magnet coil and then is connected to theteeth or the teeth are inserted into the cavity of the at least onemagnet coil and then are connected to the yoke.
 6. The transverse fluxreciprocating motor according to claim 4, wherein the stator is formedby stacking a plurality of stator core blocks having the yoke and theteeth, and wherein a fastening hole is formed in the yoke or the teethand the plurality of stator core blocks are fastened by a fasteningmember penetrating through the fastening hole.
 7. The transverse fluxreciprocating motor according to claim 4, wherein an even number ofteeth is formed at a predetermined interval in a circumferentialdirection of the stator, and wherein the at least one magnet coilcomprises a plurality of magnet coils coupled respectively to each ofthe teeth to generate flux in a direction opposite to a direction offlux generated by a neighboring magnet coil.
 8. The transverse fluxreciprocating motor according to claim 7, wherein the number of magnetsis equal to a number of the magnet coils and the plurality of magnets isarranged to have magnetic poles opposite to those of neighboringmagnets.
 9. The transverse flux reciprocating motor according to claim1, wherein the stator includes a yoke forming a magnetic path and teeththat extend from the yoke to surround the mover, and wherein the atleast one magnet coil is wound on the yoke.
 10. The transverse fluxreciprocating motor according to claim 9, wherein the yoke and the teethare separated, the at least one magnet coil forms a cavity, and the yokeis inserted into the cavity of the at least one magnet coil and then isconnected to the teeth or the teeth are inserted into the cavity of theat least one magnet coil and then are connected to the yoke.
 11. Thetransverse flux reciprocating motor according to claim 9, wherein thestator is formed by stacking a plurality of stator core blocks havingthe yoke and the teeth, and wherein a fastening hole is formed in theyoke or the teeth and the plurality of stator core blocks are fastenedby a fastening member penetrating through the fastening hole.
 12. Thetransverse flux reciprocating motor according to claim 9, wherein the atleast one magnet coil comprises a plurality of magnet coils, and whereinthe stator includes the yoke formed such that the plurality of magnetcoils are provided at both sides of the teeth.
 13. The transverse fluxreciprocating motor according to claim 9, wherein the stator includesthe yoke formed such that the at least one magnet coil is provided atone side of the teeth.
 14. The transverse flux reciprocating motoraccording to claim 13, wherein a plurality of magnets is coupled in acircumferential direction of an outer circumferential surface or anouter circumferential surface of the stator and is arranged to havemagnetic poles different from magnetic poles of neighboring magnets. 15.The transverse flux reciprocating motor according to claim 13, whereinthe yoke coupled with the at least one magnet coil is divided into aplurality of yokes and the at least one magnet coil forms a cavity, andwherein at least one of the plurality of yokes is inserted into thecavity of the at least one magnet coil.
 16. The transverse fluxreciprocating motor according to claim 15, wherein the at least onemagnet coil is wound on a bobbin having a cavity.
 17. The transverseflux reciprocating motor according to claim 15, wherein the plurality ofyokes is inserted into the cavity of the at least one magnet coil andthen is connected to each other.
 18. A transverse flux reciprocatingmotor, comprising: a stator having a plurality of magnet coils woundthereon; a plurality of magnets coupled to an outer circumferentialsurface or an inner circumferential surface of the stator and havingdifferent magnetic poles arranged in an orthogonal direction of fluxgenerated by the plurality of magnet coils; and a mover formed of amagnetic material and reciprocating with respect to the stator whilemoving in a direction in which the flux generated by the plurality ofmagnet coils and flux generated by the plurality of magnets increase,wherein at least one of the stator or the mover is formed by stacking aplurality of core blocks in a reciprocating direction of the mover. 19.The transverse flux reciprocating motor according to claim 19, whereinthe stator includes a yoke forming a magnetic path and teeth that extendfrom the yoke in a radial direction to surround the mover, and whereinthe plurality of magnet coils is wound on and coupled to the teeth, andwherein a fastening hole is formed in the yoke or the teeth and theplurality of stator core blocks are fastened by a fastening memberpenetrating through the fastening hole.
 20. A reciprocating compressor,comprising: a case having an internal space; a reciprocating motorprovided in the internal space of the case and having a reciprocatingmover; a piston coupled to the mover of the reciprocating motor andreciprocating along with the mover; a cylinder having the pistoninserted into and forming a compression space; a suction valve thatopens and closes a suction side of the compression space; and adischarge valve that opens and closes a discharge side of thecompression space, wherein the reciprocating motor includes thetransverse flux reciprocating motor according to claim 1.